404788380 has 96 divisors (see below), whose sum is σ = 1192665600. Its totient is φ = 102428928.

The previous prime is 404788379. The next prime is 404788387. The reversal of 404788380 is 83887404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404788387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100689 + ... + 104631.

It is an arithmetic number, because the mean of its divisors is an integer number (12423600).

Almost surely, 2^404788380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404788380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596332800).

404788380 is an abundant number, since it is smaller than the sum of its proper divisors (787877220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404788380 is a wasteful number, since it uses less digits than its factorization.

404788380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043 (or 4041 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 404788380 is about 20119.3533693307. The cubic root of 404788380 is about 739.7347357000.

The spelling of 404788380 in words is "four hundred four million, seven hundred eighty-eight thousand, three hundred eighty".